Motorola SURFboard SBG6580 Series User Manual

Page 30

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Product Specifications •

Motorola SURFboard • User Guide

22


UPSTREAM

Modulation

QPSK and 8, 16, 32, 64, 128 QAM

Maximum Channel Rate

DOCSIS

131.072 Mbps (4 channels) / 32.768 Mbps (single channel): @ 128 QAM at 6.4 MHz

EuroDOCSIS

131.072 Mbps (4 channels) / 32.768 Mbps (single channel): @ 128 QAM at 6.4 MHz


Channel Width

200 kHz, 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz, 6.4 MHz

Symbol Rates

160, 320, 640, 1280, 2560, 5120 ksym/s

Operating Level Range


Level range per channel (Multiple Transmit Channel mode disabled, or only Multiple Transmit
Channel mode enabled with one channel in the TCS)

DOCSIS/EuroDOCSIS

TDMA

Pmin to +57 dBmV (32 QAM, 64 QAM)

Pmin to +58 dBmV (8 QAM, 16 QAM)

Pmin to +61 dBmV (QPSK)

S-CDMA

Pmin to +56 dBmV (all modulations), where:

Pmin = +17 dBmV, 1280 kHz modulation rate

Pmin = +20 dBmV, 2560 kHz modulation rate

Pmin = +23 dBmV, 5120 kHz modulation rate

Level range per channel (two channels in the TCS)

TDMA

Pmin to +54 dBmV (32 QAM, 64 QAM)

Pmin to +55 dBmV (8 QAM, 16 QAM)

Pmin to +58 dBmV (QPSK)

S-CDMA

Pmin to +53 dBmV (all modulations), where:

Pmin = +17 dBmV, 1280 kHz modulation rate

Pmin = +20 dBmV, 2560 kHz modulation rate

Pmin = +23 dBmV, 5120 kHz modulation rate

Level range per channel (three or four channels in the TCS)

TDMA

Pmin to +51 dBmV (32 QAM, 64 QAM)

Pmin to +52 dBmV (8 QAM, 16 QAM)

Pmin to +55 dBmV (QPSK)

S-CDMA

Pmin to +53 dBmV (all modulations), where:

Pmin = +17 dBmV, 1280 kHz modulation rate

Pmin = +20 dBmV, 2560 kHz modulation rate

Pmin = +23 dBmV, 5120 kHz modulation rate


Output Impedance

75 Ω (nominal)

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